Patent application number | Description | Published |
20090088002 | METHOD OF FABRICATING A NITROGENATED SILICON OXIDE LAYER AND MOS DEVICE HAVING SAME - A method for fabricating a nitrogen-containing dielectric layer and semiconductor device including the dielectric layer in which a silicon oxide layer is formed on a substrate, such that an interface region resides adjacent to substrate and a surface region resides opposite the interface region. Nitrogen is introduced into the silicon oxide layer by applying a nitrogen plasma. After applying nitrogen plasma, the silicon oxide layer is annealed. The processes of introducing nitrogen into the silicon oxide layer and annealing the silicon oxide layer are repeated to create a bi-modal nitrogen concentration profile in the silicon oxide layer. In the silicon oxide layer, the peak nitrogen concentrations are situated away from the interface region and at least one of the peak nitrogen concentrations is situated in proximity to the surface region. A method for fabricating a semiconductor device is incorporating the nitrogen-containing silicon oxide layers also disclosed. | 04-02-2009 |
20090090975 | INTEGRATED CIRCUIT SYSTEM EMPLOYING FLUORINE DOPING - An integrated circuit system that includes: providing a substrate including a first integrated circuit region electrically connected to a second integrated circuit region; implanting a dielectric growth material underneath a gate for each of an NFET device and a PFET device within the first integrated circuit region and the second integrated circuit region; and annealing the integrated circuit system. | 04-09-2009 |
20090218636 | INTEGRATED CIRCUIT SYSTEM FOR SUPPRESSING SHORT CHANNEL EFFECTS - An integrated circuit system that includes: providing a substrate including an active device with a gate and a gate dielectric; forming a first liner, a first spacer, a second liner, and a second spacer adjacent the gate; forming a material layer over the integrated circuit system; forming an opening between the material layer and the first spacer by removing a portion of the material layer, the second spacer, and the second liner to expose the substrate; and forming a source/drain extension and a halo region through the opening. | 09-03-2009 |
20090221117 | INTEGRATED CIRCUIT SYSTEM EMPLOYING RESISTANCE ALTERING TECHNIQUES - An integrated circuit system that includes: providing a substrate including a first region and a second region; forming a first device over the first region and a resistance device over the second region; forming a first dielectric layer and a second dielectric layer over the substrate; removing a portion of the second dielectric layer; and annealing the integrated circuit system to remove dopant from the resistance device. | 09-03-2009 |
20090267117 | ENHANCED STRESS FOR TRANSISTORS - A transistor disposed on a substrate includes a gate, spacers on gate sidewalls, and diffusion regions adjacent to the gate. Silicide contacts on the diffusion regions are displaced from the spacers by a distance G. Stressors may be provided in the diffusion region to induce a first stress in the channel region of the transistor. | 10-29-2009 |
20090280629 | INTEGRATED CIRCUIT SYSTEM EMPLOYING GRAIN SIZE ENLARGEMENT - An integrated circuit system that includes: providing a substrate including an active device with a gate top surface exposed; implanting a dopant within the gate to alter the grain size of the gate material; forming a dielectric layer over the active device and the substrate; and annealing the integrated circuit system to transfer the stress of the dielectric layer into the active device. | 11-12-2009 |
20090302391 | STRESS LINER FOR STRESS ENGINEERING - A stress liner having first and second stress type is provided over a first type and a second type transistor to improve reliability and performance without incurring area penalties or layout deficiencies. | 12-10-2009 |
20090302401 | PFET ENHANCEMENT DURING SMT - An integrated circuit having a substrate on which first and second active regions are defined. The first active region comprises a first transistor and the second active region comprises a second transistor having a first type stress. A barrier layer is provided over the substrate to reduce outdiffusion of dopants in the first active region. | 12-10-2009 |
20100230777 | SELECTIVE STI STRESS RELAXATION THROUGH ION IMPLANTATION - A first example embodiment comprises the following steps and the structure formed therefrom. A trench having opposing sidewalls is formed within a substrate. A stress layer having an inherent stress is formed over the opposing trench sidewalls. The stress layer having stress layer sidewalls over the trench sidewalls. Ions are implanted into one or more portions of the stress layer to form ion-implanted relaxed portions with the portions of the stress layer that are not implanted are un-implanted portions, whereby the inherent stress of the one or more ion-implanted relaxed portions of stress layer portions is relaxed. | 09-16-2010 |
20100258868 | INTEGRATED CIRCUIT SYSTEM WITH A FLOATING DIELECTRIC REGION AND METHOD OF MANUFACTURE THEREOF - A method of manufacture of an integrated circuit system includes: providing a second layer between a first layer and a third layer; forming an active device over the third layer; forming the third layer to form an island region underneath the active device; forming the second layer to form a floating second layer with an undercut beneath the island region; and depositing a fourth layer around the island region and the floating second layer. | 10-14-2010 |
20100283101 | PATTERNING NANOCRYSTAL LAYERS - A method for forming a semiconductor device is presented. The method includes providing a substrate prepared with first and second regions with a first device layer. A second device layer including nanocrystals is also formed. A cover layer is provided over the second device layer. The cover layer is patterned to expose portions of the second device layer in the first and second regions. The exposed portions of the second device layer in the first and second regions are processed to form modified portions. The processing of the exposed portions at least reduces the nanocrystals to a diameter below a threshold diameter in the modified portions. The modified portions are removed. | 11-11-2010 |
20100304556 | INTEGRATED CIRCUIT SYSTEM WITH VERTICAL CONTROL GATE AND METHOD OF MANUFACTURE THEREOF - A method of manufacture of an integrated circuit system includes: providing a mesa over a substrate; forming a trench in the substrate adjacent the mesa; forming a second gate and a charge storage material along a trench sidewall; and forming a first gate from the mesa. | 12-02-2010 |
20100315884 | Non-volatile memory utilizing impact ionization and tunnelling and method of manufacturing thereof - A non-volatile memory device (and method of manufacture) is disclosed and structured to enable a write operation using an ionization impact process in a first portion of the device and a read operation using a tunneling process in a second portion of the device. The non-volatile memory device (1) increases hot carrier injection efficiency, (2) decreases power consumption, and (3) enables voltage and device scaling in the non-volatile memory devices. | 12-16-2010 |
20110044115 | Non-volatile memory using pyramidal nanocrystals as electron storage elements - A non-volatile memory device includes a floating gate with pyramidal-shaped silicon nanocrystals as electron storage elements. Electrons tunnel from the pyramidal-shaped silicon nanocrystals through a gate oxide layer to a control gate of the non-volatile memory device. The pyramidal shape of each silicon nanocrystal concentrates an electrical field at its peak to facilitate electron tunneling. This allows an erase process to occur at a lower tunneling voltage and shorter tunneling time than that of prior art devices. | 02-24-2011 |
20110049625 | ASYMMETRICAL TRANSISTOR DEVICE AND METHOD OF FABRICATION - Embodiments of the invention provide an asymmetrical transistor device comprising a semiconductor substrate, a source region, a drain region and a channel region. The channel region is provided between the source and drain regions, the source, drain and channel regions being provided in the substrate. The device has a layer of a buried insulating medium provided below the source region and not below the drain region thereby forming an asymmetrical structure. The layer of buried insulating medium is provided in abutment with a lower surface of the source region. | 03-03-2011 |
20110156121 | MEMORY CELL WITH IMPROVED RETENTION - A method for forming a device is presented. A substrate prepared with a feature having first and second adjacent surfaces is provided. A device layer is formed on the first and second adjacent surfaces of the feature. A first portion of the device layer over the first adjacent surface includes nano-crystals, whereas a second portion of the device layer over the second adjacent surface is devoid of nano-crystals. | 06-30-2011 |
20120007180 | FinFET with novel body contact for multiple Vt applications - FinFET devices are formed with body contact structures enabling the fabrication of such devices having different gate threshold voltages (Vt). A body contact layer is formed to contact the gate electrode (contact) enabling a forward body bias and a reduction in Vt. Two example methods of fabrication (and resulting structures) are provided. In one method, the gate electrode (silicon-based) and body contact layer (silicon) are connected by growing epitaxy which merges the two structures forming electrical contact. In another method, a via is formed that intersects with the gate electrode (suitable conductive material) and body contact layer and is filled with conductive material to electrically connect the two structures. As a result, various FinFETs with different Vt can be fabricated for different applications. | 01-12-2012 |
20120007185 | Novel method to tune narrow width effect with raised S/D structure - A method (and semiconductor device) of fabricating a semiconductor device adjusts gate threshold (Vt) of a field effect transistor (FET) with raised source/drain (S/D) regions. A halo region is formed in a two-step process that includes implanting dopants using conventional implantation techniques and implanting dopants at a specific twist angle. The dopant concentration in the halo region near the active edge of the raised S/D regions is higher and extends deeper than the dopant concentration within the interior region of the raised S/D regions. As a result, Vt near the active edge region is adjusted and different from the Vt at the active center regions, thereby achieving same or similar Vt for a FET with different width. | 01-12-2012 |
20120018815 | Semiconductor device with reduced contact resistance and method of manufacturing thereof - A method (and semiconductor device) of fabricating a semiconductor device provides a filed effect transistor (FET) with reduced contact resistance (and series resistance) for improved device performance. An impurity is implanted in the source/drain (S/D) regions after contact silicide formation and a spike anneal process is performed that lowers the schottky barrier height (SBH) of the interface between the silicide and the lower junction region of the S/D regions. This results in lower contact resistance and reduces the thickness (and Rs) of the region at the silicide-semiconductor interface. | 01-26-2012 |
20120038009 | Novel methods to reduce gate contact resistance for AC reff reduction - A method (and semiconductor device) of fabricating a semiconductor device provides a field effect transistor (FET) with reduced gate contact resistance (and series resistance) for improved device performance. An impurity is implanted or deposited in the gate stack in an impurity region between the metal gate electrode and the gate contact layer. An anneal process is performed that converts the impurity region into a segregation layer which lowers the schottky barrier height (SBH) of the interface between the metal gate electrode (e.g., silicide) and gate contact layer (e.g., amorphous silicon). This results in lower gate contact resistance and effectively lowers the device's AC Reff. | 02-16-2012 |
20120139046 | ASYMMETRICAL TRANSISTOR DEVICE AND METHOD OF FABRICATION - Embodiments of the invention provide an asymmetrical transistor device comprising a semiconductor substrate, a source region, a drain region and a channel region. The channel region is provided between the source and drain regions, the source, drain and channel regions being provided in the substrate. The device has a layer of a buried insulating medium provided below the source region and not below the drain region thereby forming an asymmetrical structure. The layer of buried insulating medium is provided in abutment with a lower surface of the source region. | 06-07-2012 |
20120168895 | MODIFYING GROWTH RATE OF A DEVICE LAYER - A device includes a substrate with a device region on which a transistor is formed. The device region includes active edge regions and an active center region which have different oxidation growth rates. A growth rate modifier (GRM) comprising dopants which modifies oxidation growth rate is employed to produce a gate oxide layer which has a uniform thickness. The GRM may enhance or retard the oxidation growth, depending on the type of dopants used. Fluorine dopants enhance oxidation growth rate while nitrogen dopants retard oxidation growth rate. | 07-05-2012 |
20120168913 | FINFET - A fin type transistor includes a dielectric layer on a substrate surface which serves to isolate the gate of the transistor from the substrate. The dielectric layer includes a non-selectively etched surface to produce top portions of fin structures which have reduce height variations across the wafer. The fin type transistor may also include a counter doped region at least below the S/D regions to reduce parasitic capacitance to improve its performance. | 07-05-2012 |
20120171832 | FINFET WITH STRESSORS - A fin type transistor includes a dielectric layer on a substrate surface which serves to isolate the gate of the transistor from the substrate. The dielectric layer includes a non-selectively etched surface to produce top portions of fin structures which have reduced height variations across the wafer. The fin type transistor may also include a buried stressor and/or raised or embedded raised S/D stressors to cause a strain in the channel to improve carrier mobility. | 07-05-2012 |
20120228676 | CHANNEL SURFACE TECHNIQUE FOR FABRICATION OF FinFET DEVICES - A FinFET (p-channel) device is formed having a fin structure with sloped or angled sidewalls (e.g., a pyramidal or trapezoidal shaped cross-section shape). When using conventional semiconductor substrates having a (100) surface orientation, the fin structure is formed in a way (groove etching) which results in sloped or angled sidewalls having a (111) surface orientation. This characteristic substantially increases hole mobility as compared to conventional fin structures having vertical sidewalls. | 09-13-2012 |
20130187242 | CHANNEL SURFACE TECHNIQUE FOR FABRICATION OF FinFET DEVICES - A FinFET (p-channel) device is formed having a fin structure with sloped or angled sidewalls (e.g., a pyramidal or trapezoidal shaped cross-section shape). When using conventional semiconductor substrates having a (100) surface orientation, the fin structure is formed in a way (groove etching) which results in sloped or angled sidewalls having a (111) surface orientation. This characteristic substantially increases hole mobility as compared to conventional fin structures having vertical sidewalls. | 07-25-2013 |
20130270654 | SEMICONDUCTOR DEVICE WITH REDUCED CONTACT RESISTANCE AND METHOD OF MANUFACTURING THEREOF - A method (and semiconductor device) of fabricating a semiconductor device provides a filed effect transistor (FET) with reduced contact resistance (and series resistance) for improved device performance. An impurity is implanted in the source/drain (S/D) regions after contact silicide formation and a spike anneal process is performed that lowers the schottky barrier height (SBH) of the interface between the silicide and the lower junction region of the S/D regions. This results in lower contact resistance and reduces the thickness (and Rs) of the region at the silicide-semiconductor interface. | 10-17-2013 |
20130307038 | FINFET WITH STRESSORS - A fin type transistor includes a dielectric layer on a substrate surface which serves to isolate the gate of the transistor from the substrate. The dielectric layer includes a non-selectively etched surface to produce top portions of fin structures which have reduced height variations across the wafer. The fin type transistor may also include a buried stressor and/or raised or embedded raised S/D stressors to cause a strain in the channel to improve carrier mobility. | 11-21-2013 |
20130328118 | NON-VOLATILE MEMORY USING PYRAMIDAL NANOCRYSTALS AS ELECTRON STORAGE ELEMENTS - A non-volatile memory device includes a floating gate with pyramidal-shaped silicon nanocrystals as electron storage elements. Electrons tunnel from the pyramidal-shaped silicon nanocrystals through a gate oxide layer to a control gate of the non-volatile memory device. The pyramidal shape of each silicon nanocrystal concentrates an electrical field at its peak to facilitate electron tunneling. This allows an erase process to occur at a lower tunneling voltage and shorter tunneling time than that of prior art devices. | 12-12-2013 |
20140332902 | NOVEL METHOD TO TUNE NARROW WIDTH EFFECT WITH RAISED S/D STRUCTURE - A method (and semiconductor device) of fabricating a semiconductor device adjusts gate threshold (Vt) of a field effect transistor (FET) with raised source/drain (S/D) regions. A halo region is formed in a two-step process that includes implanting dopants using conventional implantation techniques and implanting dopants at a specific twist angle. The dopant concentration in the halo region near the active edge of the raised S/D regions is higher and extends deeper than the dopant concentration within the interior region of the raised S/D regions. As a result, Vt near the active edge region is adjusted and different from the Vt at the active center regions, thereby achieving same or similar Vt for a FET with different width. | 11-13-2014 |
20150069512 | FINFET - A fin type transistor includes a dielectric layer on a substrate surface which serves to isolate the gate of the transistor from the substrate. The dielectric layer includes a non-selectively etched surface to produce top portions of fin structures which have reduce height variations across the wafer. The fin type transistor may also include a counter doped region at least below the S/D regions to reduce parasitic capacitance to improve its performance. | 03-12-2015 |